Firearm Lower Receiver And Method of Use

Abstract

A firearm lower receiver and method of use may include a screw disposed to engage a pin housing in an upper receiver to minimize rattling or vibration between the upper receiver and the lower receiver.

What is claimed is: 
     
         1 . A firearm comprising:
 An upper receiver and a lower receiver, a takedown pin for selectively attaching the upper receiver to the lower receiver and a screw disposed adjacent the takedown pin.   
     
     
         2 . The firearm of  claim 1 , wherein the upper receiver has a takedown pin housing which engages the takedown pin. 
     
     
         3 . The firearm of  claim 2 , wherein the screw is a set screw positioned to engage the takedown pin housing when the takedown pin is disposed in the takedown pin housing. 
     
     
         4 . The firearm of  claim 2 , wherein the takedown pin housing has a hole having a cross-sectional area and wherein the takedown pin has a cross-sectional area and wherein the cross-sectional area of the hole is larger than the cross-sectional area of the pin. 
     
     
         5 . The firearm of  claim 1 , further comprising a pistol grip and wherein the pistol grip has a lumen in communication with the screw. 
     
     
         6 . The firearm of  claim 1 , further comprising a trigger and wherein the screw is disposed above the trigger. 
     
     
         7 . The firearm of  claim 1 , wherein the lower receiver has holes for receiving the set screw and wherein the screw is a set screw disposed below the holes. 
     
     
         8 . A firearm comprising a lower receiver, the lower receiver having at least one hole for receiving a pin and a set screw disposed adjacent the pin for forcing a pin housing into contact with the pin. 
     
     
         9 . The firearm of  claim 8 , wherein the at least one hole is disposed toward the back of the lower receiver and wherein the set screw is disposed below the at least one hole for the pin. 
     
     
         10 . The firearm of  claim 8 , wherein the lower receiver includes a thumb trigger. 
     
     
         11 . The firearm of  claim 10 , wherein set screw is disposed above the thumb trigger. 
     
     
         12 . The firearm of  claim 10 , wherein the set screw comprises a flange or collar disposed for manually gripping to allow toolless tightening or loosening of the set screw. 
     
     
         13 . The firearm of  claim 8 , further comprising an upper receiver, the upper receiver having at least one pin housing. 
     
     
         14 . The firearm of  claim 8  further comprising an upper receiver having a pivot pin housing having a hole therein and a takedown pin housing having a hole therein. 
     
     
         15 . The firearm of  claim 14 , wherein the takedown pin housing is disposed above the set screw when the upper receiver is disposed on top of the lower receiver. 
     
     
         16 . The firearm of  claim 15 , further comprising a takedown pin extending through the at least one hole in the lower receiver and through the takedown pin housing. 
     
     
         17 . A method for securing an upper receiver to a lower receiver, the method comprising:
 selecting an upper receiver having a takedown pin housing for engaging a takedown pin;   selecting a lower receiver having at least one hole for receiving a takedown pin and a screw for engaging the take down pin housing;   disposing the upper receiver and the lower receiver so that the takedown pin housing is in alignment with the at least one hole in the lower receiver;   advancing a take down pin into the at least one hole and into the takedown pin housing; and   tightening the screw to engage the takedown pin housing and urge the takedown pin housing into contact with the takedown pin.   
     
     
         18 . The method according to  claim 17 , wherein the takedown pin housing includes a hole and wherein the method comprises placing the takedown pin in the hole in the takedown pin housing prior to advancing the screw. 
     
     
         19 . The method according to  claim 18 , comprising advancing the screw until a lower surface of a wall defining the hole in the takedown pin housing is forced into contact with the takedown pin. 
     
     
         20 . The method according to  claim 18 , comprising advancing the screw so that the screw causes the takedown pin to forcefully engage a top of a hole in the takedown pin housing.